AeroLeads people directory · profile
Ryan Lefevre Email & Phone Number
Senior Software Engineer
at
0x
1 work email found
@hodinkee.com
2 phones found area 425
LinkedIn matched
✓ Verified July 2026
4 data sources
Profile completeness 100%
Who is Ryan Lefevre? Overview
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Quick answer
Ryan Lefevre is listed as Senior Software Engineer at 0x, a with 304 employees, based in United States. AeroLeads shows a work email signal at hodinkee.com, phone signal with area code 425, and a matched LinkedIn profile for Ryan Lefevre.
Ryan Lefevre previously worked as Staff Software Engineer at Yuga Labs and Director Of Engineering at Proof Holdings, Inc.. Ryan Lefevre holds Bachelor Of Science (B.S.), Computer Science from Worcester Polytechnic Institute.
Company email context
Email format at 0x
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{first}@hodinkee.com
86% confidence
AeroLeads found 1 current-domain work email signal for Ryan Lefevre. Compare company email patterns before reaching out.
Profile bio
About Ryan Lefevre
Full stack web development including Ruby, Javascript, Elixir, HTML, CSS, and SQL. I also have experience with Java and C, including writing native Ruby extensions. Frequent open-source developer, contributor, and publisher to npm and Rubygems.These days I work mostly with Heroku and AWS, but I have also worked with, set up, and managed highly-scaleable systems that utilize software such as Chef, Cassandra, memcached, Redis, Thrift, FlockDB, Graylog2, Elasticsearch, Rails, and MySQL Clusters in environments that have received well over 5,000 requests/second.
Listed skills include Computers, Git, Sap, Shell, and 42 others.
Current workplace
Ryan Lefevre's current company
Company context helps verify the profile and gives searchers a useful next step.
0X
10 roles
Ryan Lefevre work experience
A career timeline built from the work history available for this profile.
Mar 2024 - Present
Director Of Engineering
Proof Holdings, Inc.
Apr 2022 - Mar 2024
Principal Engineer
Full-stack web position working with Ruby (and Rails), JavaScript (and React), PostgreSQL, MySQL, Heroku, Redis, and more. Responsible for building out most of the products and infrastructure to support the business.
Jun 2015 - Apr 2022
Feb 2015 - Jun 2015
Sr. Software Engineer
Layervault
Full-stack engineer with a speciality in images. Also originally responsible for managing server infrastructure.Wrote the entire image processing pipeline from scratch. Involved taking source media files from programs like Photoshop, Illustrator, and Sketch, and converting them to images easily displayable by the browser. The pipeline was asynchronous, fault-tolerant, and distributed across multiple data centers and platforms.Built a good portion of the API that talked to our OSX client for reliable file syncing.Developed numerous open-source libraries, such as:- PSD.rb: for parsing and rendering PSD files with Ruby. Has a built-in rendering engine that can accurately recreate most PSDs.- psd_native: the native C complement to PSD.rb, which transparently overwrites computationally heavy methods with native equivalents, resulting in a significant speed boost.- sidekiq-gelf-rb: Sidekiq middleware for logging jobs to a Graylog or GELF-supported server.- LayerVault API libraries in Ruby and Javascript.- disk_store: A Rails cache inspired library for caching large files to disk.- ase.rb: a general purpose reader and writer for Adobe Swatch Exchange files.- An omniauth authentication strategy for LayerVault's OAuth 2 authentication.- divergence: an experimental HTTP proxy that allowed you to switch project submodules in a staging environment on the fly based on the URLs subdomain.
Sep 2012 - Feb 2015
Software/Systems Engineer
Web development for the largest Twitter photo sharing website on the internet.
May 2010 - Aug 2012
Software/Systems Engineer
Heello
May 2010 - Aug 2012
Lead Web Developer And Systems Administrator
Developer of the forum system for the site and most of its additional features. Also implemented the forum design and helped with numerous sister sites. Set up and manage numerous dedicated Linux web servers remotely.
Aug 2008 - May 2010
Jan 2009 - Apr 2009
Team & coworkers
Colleagues at 0x
Other employees you can reach at 0xproject.com. View company contacts for 304 employees →
CG
Cristal Gutierrez
Colleague at 0XSantiago De Los Caballeros, Santiago, Dominican Republic
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WW
Wrench Wiser
Colleague at 0XSan Francisco, California, United States
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AA
Aa Aa
Colleague at 0XAlexandria, Egypt
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MM
Moo Moo
Colleague at 0XLondon, England, United Kingdom
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SD
Suhail Durani
Colleague at 0XOakland, California, United States
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KP
Kethan Patel
Colleague at 0XYadgir, Karnataka, India
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MH
Miguel Hoch
Colleague at 0XJersey City, New Jersey, United States
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MS
Mohd Shah
Colleague at 0XSandakan, Sabah, Malaysia
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BM
Byeong Min Park
Colleague at 0XEmeryville, California, United States
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BC
Bobby Cant
Colleague at 0XBaltimore City County, Maryland, United States
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Cristal Gutierrez
Colleague at 0XSantiago De Los Caballeros, Santiago, Dominican Republic
View →
WW
Wrench Wiser
Colleague at 0XSan Francisco, California, United States
View →
AA
Aa Aa
Colleague at 0XAlexandria, Egypt
View →
MM
Moo Moo
Colleague at 0XLondon, England, United Kingdom
View →
SD
Suhail Durani
Colleague at 0XOakland, California, United States
View →
KP
Kethan Patel
Colleague at 0XYadgir, Karnataka, India
View →
MH
Miguel Hoch
Colleague at 0XJersey City, New Jersey, United States
View →
MS
Mohd Shah
Colleague at 0XSandakan, Sabah, Malaysia
View →
BM
Byeong Min Park
Colleague at 0XEmeryville, California, United States
View →
BC
Bobby Cant
Colleague at 0XBaltimore City County, Maryland, United States
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1 education record
Ryan Lefevre education
-
Worcester Polytechnic Institute
FAQ
Frequently asked questions about Ryan Lefevre
Quick answers generated from the profile data available on this page.
What company does Ryan Lefevre work for?
Ryan Lefevre works for 0x.
What is Ryan Lefevre's role at 0x?
Ryan Lefevre is listed as Senior Software Engineer at 0x.
What is Ryan Lefevre's email address?
AeroLeads has found 1 work email signal at @hodinkee.com for Ryan Lefevre at 0x.
What is Ryan Lefevre's phone number?
AeroLeads has found 2 phone signal(s) with area code 425 for Ryan Lefevre at 0x.
Where is Ryan Lefevre based?
Ryan Lefevre is based in United States while working with 0x.
What companies has Ryan Lefevre worked for?
Ryan Lefevre has worked for 0X, Yuga Labs, Proof Holdings, Inc., Hodinkee, Inc., and North Technologies.
Who are Ryan Lefevre's colleagues at 0x?
Ryan Lefevre's colleagues at 0x include Cristal Gutierrez, Wrench Wiser, Aa Aa, Moo Moo, and Suhail Durani.
How can I contact Ryan Lefevre?
You can use AeroLeads to view verified contact signals for Ryan Lefevre at 0x, including work email, phone, and LinkedIn data when available.
What schools did Ryan Lefevre attend?
Ryan Lefevre holds Bachelor Of Science (B.S.), Computer Science from Worcester Polytechnic Institute.
What skills is Ryan Lefevre known for?
Ryan Lefevre is listed with skills including Computers, Git, Sap, Shell, Rest, C, Jquery, and Bbq.
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